<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./jquery-3.7.1.min.js"></script>
</head>
<body>
    <p>sxt</p>
    <p>itbaizhan</p>
    <p>web</p>

    <script>
        //将三个p标签包裹在div容器中

        $("p").wrapAll("<div></div>");
    </script>
</body>
</html>